我需要创建一个带有自动增量主键列的表>我尝试使用以下代码,但它会引发错误。
我的代码:
CreateTableAccess.CreateAccessTable("CREATE TABLE D_Centre\n"
+ "(\n"
+ " SlNo AUTOINCREMENT,\n"
+ " CentreID VARCHAR,\n"
+ " CentreName VARCHAR,\n"
+ " [Createddate] DateTime, \n"
+ " CreatedBy VARCHAR, \n"
+ " [Updateddate] DateTime\n"
+ ")", "D_Centre");
public static void CreateAccessTable(String sqlscript, String tablename )
{
String dbFileSpec = DataEntryScreen.homedirectory+"/"+"Dataentry.accdb";
Connection conn = null ;
try {
conn = DriverManager.getConnection("jdbc:ucanaccess://" + dbFileSpec);
} catch (SQLException ex) {
Logger.getLogger(CreateTableAccess.class.getName()).log(Level.SEVERE, null, ex);
}
DatabaseMetaData dmd = null;
try {
dmd = conn.getMetaData();
} catch (SQLException ex) {
Logger.getLogger(CreateTableAccess.class.getName()).log(Level.SEVERE, null, ex);
}
ResultSet rs = null;
try {
rs = dmd.getTables(null, null, tablename , new String[]{"TABLE"});
} catch (SQLException ex) {
Logger.getLogger(CreateTableAccess.class.getName()).log(Level.SEVERE, null, ex);
}
// }
{
try {
if (rs.next()) {
System.out.println("Table ["+tablename+"] already exists.");
} else {
System.out.println("Table ["+tablename+"] does not exist.");
Statement s = conn.createStatement();
s.executeUpdate(sqlscript);
System.out.println("Table ["+tablename+"] created.");
}
} catch (SQLException ex) {
Logger.getLogger(CreateTableAccess.class.getName()).log(Level.SEVERE, null, ex);
System.err.println("Error in table creation --> "+ex.toString());
}
try {
conn.commit();
} catch (SQLException ex) {
Logger.getLogger(CreateTableAccess.class.getName()).log(Level.SEVERE, null, ex);
}
try {
conn.close();
} catch (SQLException ex) {
Logger.getLogger(CreateTableAccess.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
错误: 2014年11月4日下午3:39:28 org.DataEntryApplication.view.CreateTableAccess CreateAccessTable 严重:空 net.ucanaccess.jdbc.UcanaccessSQLException:未找到类型或用户缺少权限:AUTOINCREMENT at net.ucanaccess.jdbc.UcanaccessStatement.executeUpdate(UcanaccessStatement.java:164) at org.DataEntryApplication.view.CreateTableAccess.CreateAccessTable(CreateTableAccess.java:53) at org.DataEntryApplication.view.AccessProcess.accessProcess(AccessProcess.java:40) 在org.DataEntryApplication.view.DataEntryScreen.addComponentsToPane(DataEntryScreen.java:188) 在org.DataEntryApplication.view.DataEntryScreen.createAndShowGUI(DataEntryScreen.java:1092) 在org.DataEntryApplication.view.Login $ 7.actionPerformed(Login.java:277) 在javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018) 在javax.swing.AbstractButton $ Handler.actionPerformed(AbstractButton.java:2341) 在javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402) 在javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259) 在javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252) 在java.awt.Component.processMouseEvent(Component.java:6505) 在javax.swing.JComponent.processMouseEvent(JComponent.java:3320) at java.awt.Component.processEvent(Component.java:6270) at java.awt.Container.processEvent(Container.java:2229) at java.awt.Component.dispatchEventImpl(Component.java:4861) at java.awt.Container.dispatchEventImpl(Container.java:2287) at java.awt.Component.dispatchEvent(Component.java:4687) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422) at java.awt.Container.dispatchEventImpl(Container.java:2273) at java.awt.Window.dispatchEventImpl(Window.java:2719) at java.awt.Component.dispatchEvent(Component.java:4687) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735) at java.awt.EventQueue.access $ 200(EventQueue.java:103) at java.awt.EventQueue $ 3.run(EventQueue.java:694) at java.awt.EventQueue $ 3.run(EventQueue.java:692) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain $ 1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.security.ProtectionDomain $ 1.doIntersectionPrivilege(ProtectionDomain.java:87) at java.awt.EventQueue $ 4.run(EventQueue.java:708) at java.awt.EventQueue $ 4.run(EventQueue.java:706) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain $ 1.doIntersectionPrivilege(ProtectionDomain.java:76) at java.awt.EventQueue.dispatchEvent(EventQueue.java:705) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138) at java.awt.EventDispatchThread.run(EventDispatchThread.java:91) 引起:java.sql.SQLException:未找到类型或用户缺少权限:AUTOINCREMENT at net.ucanaccess.jdbc.AbstractExecute.addDDLCommand(AbstractExecute.java:105) at net.ucanaccess.jdbc.AbstractExecute.executeBase(AbstractExecute.java:127) 在net.ucanaccess.jdbc.ExecuteUpdate.execute(ExecuteUpdate.java:56) at net.ucanaccess.jdbc.UcanaccessStatement.executeUpdate(UcanaccessStatement.java:162) ......还有41个
表格创建错误 - > net.ucanaccess.jdbc.UcanaccessSQLException:未找到类型或用户缺少权限:AUTOINCREMENT
答案 0 :(得分:3)
确保您使用的是最新版本的UCanAccess,here。
我刚刚尝试了以下UCanAccess 2.0.9.1,它对我来说很好。
s.executeUpdate(
"CREATE TABLE D_Centre (" +
"slNo AUTOINCREMENT PRIMARY KEY, " +
"CentreID VARCHAR(100) " +
")");
编辑重新评论
UCanAccess 2.0.9.1(及更高版本)也支持列的DEFAULT值。我刚测试了这个并且它有效:
s.executeUpdate(
"CREATE TABLE D_Centre (" +
"slNo AUTOINCREMENT PRIMARY KEY, " +
"Centre VARCHAR(100) DEFAULT 'foo' " +
")");